Parallel Momentum Distributions as a Probe of Halo Wave Functions

J. H. Kelley, Sam M. Austin, R. A. Kryger, D. J. Morrissey, N. A. Orr, B. M. Sherrill, M. Thoennessen, J. S. Winfield, J. A. Winger, and B. M. Young
Phys. Rev. Lett. 74, 30 – Published 2 January 1995
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Abstract

Distributions of the parallel momentum of Be10 fragments from the breakup of 63A MeV Be11 have been measured for Be9, Nb93, Ta181, and U238 targets. The distributions have similar narrow widths with a mean value of 43.6 ± 1.1 MeV/c FWHM, and agree with a theoretical momentum distribution for the valence neutron in Be11. The breakup mechanisms do not appear to distort the parallel momentum distribution of the Be10 core. These findings support the existence of a one-neutron halo in Be11 and the use of the parallel momenta of the heavy breakup products as a reliable probe of halo neutron momenta.

  • Received 27 July 1994

DOI:https://doi.org/10.1103/PhysRevLett.74.30

©1995 American Physical Society

Authors & Affiliations

J. H. Kelley1,2, Sam M. Austin1,2, R. A. Kryger1, D. J. Morrissey1,3, N. A. Orr1,*, B. M. Sherrill1,2, M. Thoennessen1,2, J. S. Winfield1, J. A. Winger1,†, and B. M. Young1,2,‡

  • 1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
  • 2Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824
  • 3Department of Chemistry, Michigan State University, East Lansing, Michigan 48824

  • *Present address: LPC, Boulevard du Maréchal Juin, 14050 Caen Cedex, France.
  • Present address: Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762.
  • Present address: A. W. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06511.

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Vol. 74, Iss. 1 — 2 January 1995

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